Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 620 [Rate centres in NPA 620] [Dial plan for NPA 620]

NXX: 631

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-631 A Yates Center KS WCHTKSBRX9Z  515J IP HORIZON LLC 532   2024-06-13   
620-631 0 Yates Center KS WCHTKSBRXPZ  624H ONVOY SPECTRUM, LLC 532   2025-01-21   
620-631 1 Yates Center KS WCHTKSBRX9Z  515J IP HORIZON LLC 532   2024-06-13   
620-631 2 Yates Center KS   6701 AERIAL COMMUNICATIONS, INC. 532   2025-04-18   
620-631 3 Yates Center KS   5562 METROPCS, INC. 532   2025-04-19   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.